单词	公重心
释义	同Center, Centre
随便看	valve core valve cotter valve cover valve-covered orifice nozzle valve, cylindrical valved valve damping circuit valve deblocking valve designation system valve detector valve device assembly valve device blocking valve device commutation valve device quenching [valve device] stack valve device stack valve diagram valve differential valve dimension valve disc valve disc of arrester valve disorder valve, drain valve drive mechanism valve electronics